Tonight, I entered your web sites and I saw that your map has the wrong mark about sea between korea and japan.
I was so surprised about this mark. Your World Ocean Map marks that sea as Sea of Japan.
However, It is wrong name about name of East Sea. The correct name is East Sea.
And now, I'm going to tell you why Sea of Japan is wrong name and East Sea is correct name.
A long time ago, the Korea and Japan accepted that sea between two countries was named as East Sea and many old maps were marked that sea as East Sea.
But, in 19c, when Imperialism were spread in the world and japan, Japan annexed Korea by force and illegal, they changed name the sea's name to Sea of Japan.
Nowaday, Korea has independant from Japan, so it's right that the sea's name should be changed to the right name.